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範例:轉動追趕問題[88日大]

甲、乙兩人沿圓軌道同向賽跑，甲沿著半徑為r1的外跑道跑，乙則沿著半徑為r2的內跑道跑。設甲以v的速率經過乙時，乙開始起跑，此後甲始終以v的速率跑，而乙則以等角加速度追甲，則在乙追及甲時，乙的速率為(A)2vr1/r2(B)vr1/r2 (C)v (D)2vr2/r1 (E)vr2/r1。[88日大]


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Posted in 歷屆物理考題, 角速度與角加速度.

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By admin – 2009 年 02 月 13 日

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